Furnace



Sept. 14, 1926. 1,599,537

1,. MILLER FURNACE Filed-Oct. 6, 1924 2 Sheets-Sheet l II v 111 11 11111 IIIllIIIIIII/IIIIII7 TTTYYWW INVENTOR BY LEA-W 1V HTTORNEI Sept. 14 1926.

L. MILLER FURNACE Filed Oct. 6. 1924 2 Sheets-Shet 2 INVENTOR g mm IG 4. 51 q WNW HTTORNEL Patented Sept. 192 6.7

memes mLnnalon iaon rareat;Q E nc cANAmi; f i

Applieation filedbetober 6, Serial No. f741, 925

, The invention relates to a furnace aswdescribed in the present Specification andillustratedcin the accompanying drawings that;

form part offthe same. W e a ,The invention consists essentially of the, novel features of construction pointed outxln the claini for novelty following a descrip-' tion containing an explanation 111 deta hottg an acceptable form cftl-ie inx "ention j z The 1 ob ects of th'e; lnventlon are to c1ncrease the heating surfaces and thereby economize in the consumptionrof fuel; to facilis tate the distribution of heatln radiating hot Water heating systems; to construct afurnace applicabletoi the use of various known vkinds of fuel; to insure the utilization to the fullest extent *possible of the heating gases and obtain the maximun'r efficiency from a given quantity of" fuel;-and gen-o erally to provide a j-durab le and serviceal le furnace at a low cost in'respect to production and which iseconomical infloperation for the householdereand otherusers 3 Inthe draw ngs, Figure-1 is an eleva:

tional View of'the furnacelhaving the front broken to disclose the fire tubes. j

. Figure 2 1s a cross sectional View onthe line 22 in Figure 1. V V v V Figure 3 1s a vertlcalsectlonal" view on the line 3- -8 in Figure 2.

Figure &' is a vertical"sectional View on the line H in Figure 2- showing aflcoal:

distinct part of a Water jacket and indicat edby the numerals 13, 14; and 15. The sections are joined at the lower endsby the tubular passages 16, 17 and 18, so that the re turn pipes 20, 21 and 22 into the lowerends of the jackets 13, 14 and Will deliver water for a common level in the threefurnace sections. At the upper ends the jacket sections are connected by the passages28, 24

and 25 eachnpassage having a centralisw V I gate19,"which opens only at the increase-of pressurein one compartmentas co pared with: the pressure 1 in theadj oining complart perspective dc ment. a

Each section is forined with a' hotiwaterp 'chainber denoted by the numerals 2'6, '27 and QSf'ha i'ng: the firertubes 29,1 80* and 131 re spectively extendingfrom theAhea'dsBQ, 33 fandee and" 35, 36 Eand 37. Thexohambers" j 26,27 and. 28-e gtend from -the' upper end" of the casing downwardlymand terminatept wards the lower endv leaving sufiicientrooinfor the firebox, gas .or 011' burners or other fuel installation." The said ClltlTlbEISgCOlIh municate Witlrthe jackets 18,-1 1and- 15 so that with thenumerous. fire tubes there" is a i "great heating surface,"'besijdesfaswthe char hers are elliptical in cross section theinner chambers.

Tl1e outlet pipes' tl, 12 arid-13 lead from the upper "endsi'of the chambers 26,27 and seam-1am distributedasfdesired to the v diating system, each outlet pipe havingits ,walls 88, 39 and 40- present 'WlClG arc-shaped surfaces for the completejheighty; ofsthe.

own return pipe, thereby providing ameans whereby the circuits canhe eistinct"if -r-desired and directed to particular parts ofa house or building making itpossibleto in ;'crease the heat mo a and reducein another part or, if s required shut it "off enpart and maintain it in the a I Thegas burners etandefi, 16 and 17 and tirely in the one others.

18 and 19 are shown as the preferable heating means employed, each set being apportioned to a hot water chamber. All the gas burners areconnected' toa 'Inain' gas feed pipe and in the leads from thelatter gas;

cocks are shown forcutting off the feed, the

gascocks for the; burners. 45, 47 and 48 being preferably operated "from a thermostat 5th This thermostat.regulation is notfshown in detail as it is altogether another art, but the thermostats 50 are shown as governed bythe heat of the return Water, which is safer Way to regulate the furnace.

e The platedampers 51,52 and 53 form covperhaps, a

ers for the upper ends of'the hot water chambers 26, 27 and 28 and have guiderods 54 and 55 fitting into'a firetube hole at each 1 end of the nests of tubes and these rods direct the plates over theheads 32, 33 and 34 if to cover in thefire tubes 29, 30 and-31 and thereby effectually shut offdraught. These 'damperplates 51, 52 and 53 are operated from the central stems 56 by the rocker arms 57 connected by the links58 to the stems 56..

he other ends of therockerarms 57 are shown with the ratchet bar 59 en aged by" the pawl 60 spring-held thereto. Many other ways of lifting these plates could be shown but for the present tllfilil'lOOVG will; be

' suflicient, as most, likely they will be connecte d up to thermostat operating mechan sm. i I p The baffle plate 63 closes in the space between the walls38, 39 and 40 at the upper end, and the furnace top 61 fits over the up: per end of the casing and has a fluespipe fro mfthecentre. thereof, thi'stop leaving suffioient room for'the opening and closing of the plate dampersaforesaid.

The gas burners are alsoell'ipticalinshape and the middle ones. 414;, 46 and 4L8 are supposed to be connected all the t-i.nie,.wl ile the furnace is in use and burn continuously through suitable spreading ]8l2 holes. The

burners 45,147 and 49 are operated. when wanted and are preferably controlled by a thermostat and have jets pointing upwardly and to the jacket Walls. 1

Another figure shows a coal grate and coal fuel but gas and oil are likely to be used more particularly in cities where they havea plentiful supply of gas.

' In the operation of this furnace the'central gas burners arelighted from a pilot light'62, which is kept going continuously.

i S0 soon as additional heat is required the.

outer burner. will then eral use.

The heat is regulated by the gas consumed and also by-the circulation ofair constituting hot gases through the firetubes, and this come into more genis facilitated by raising the plate dampers,

of course with a coal fire the tubes are all 1inportant for draft and the heating gases are used to their fullest extent in the multiplicity of tubes in the three hot water chambers.

It will readily be seen how the gases can be directed to one or IHOIQ'Of the hot water chambers through the operation of the damper plates, therefore a selection can ways he made or the three can be run to their limit.

The economy in the consumption of fuel can readily be seen in the simple means em- A furnace comprising a plurality of dupli-- cate individual vertical fire tube boilers haviiig curved walls and mating longitudinally extending joint-forming edges said boilers being so dimensioned as to provide when in assembled relation a circular casing and a central-vertical flueythe outer walls of said boilers being downwardly extended to pro vide a fire box beneath the fire tubes and said-main central flue, draft regulators covering the upper ends of the fire tubes of said boilers and adjustable thereon, and a hood forming the top of the furnace and enclosing the upper ends of said boilers and said main central flue and having a suitable chimney therefrom.

Signed at Montreal, Canada this lZth day of September 1924.

LAURITS-MILLER. 

